Edge z3 reassignment

[Raine-Yang-UofT]

Proposed Changes

Check for AugAssign and AnnAssign node as variable reassignment statements in creating CFG edge z3 constraints.

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Screenshots of your changes (if applicable)

Type of Change

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Type	Applies?
🚨 Breaking change (fix or feature that would cause existing functionality to change)
✨ New feature (non-breaking change that adds functionality)
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♻️ Refactoring (internal change to codebase, without changing functionality)
🚦 Test update (change that only adds or modifies tests)
📚 Documentation update (change that only updates documentation)
📦 Dependency update (change that updates a dependency)
🔧 Internal (change that only affects developers or continuous integration)	X

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[coveralls]

Pull Request Test Coverage Report for Build 11017275802

Details

• 11 of 11 (100.0%) changed or added relevant lines in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.01%) to 92.05%

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Totals
Change from base Build 10984341351:	0.01%
Covered Lines:	3045
Relevant Lines:	3308

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💛 - Coveralls